GK SDK 源码库: XMIPCLinuxV100R005C00SPC030 (kernel/tools/open_source excluded)

2026-09-06 03:52:57 +08:00
commit b1928b41c0
21813 changed files with 4413081 additions and 0 deletions
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+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * (C) Copyright 2000-2004
+ * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
+ *
+ * (C) Copyright 2011
+ * Texas Instruments, <www.ti.com>
+ *
+ * Matt Porter <mporter@ti.com>
+ */
+#include <common.h>
+#include <gzip.h>
+#include <spl.h>
+#include <xyzModem.h>
+#include <asm/u-boot.h>
+#include <linux/libfdt.h>
+
+#define BUF_SIZE 1024
+
+/*
+ * Information required to load image using ymodem.
+ *
+ * @image_read: Now of bytes read from the image.
+ * @buf: pointer to the previous read block.
+ */
+struct ymodem_fit_info {
+	int image_read;
+	char *buf;
+};
+
+static int getcymodem(void) {
+	if (tstc())
+		return (getc());
+	return -1;
+}
+
+static ulong ymodem_read_fit(struct spl_load_info *load, ulong offset,
+			     ulong size, void *addr)
+{
+	int res, err, buf_offset;
+	struct ymodem_fit_info *info = load->priv;
+	char *buf = info->buf;
+
+	while (info->image_read < offset) {
+		res = xyzModem_stream_read(buf, BUF_SIZE, &err);
+		if (res <= 0)
+			break;
+
+		info->image_read += res;
+	}
+
+	if (info->image_read > offset) {
+		res = info->image_read - offset;
+		if (info->image_read % BUF_SIZE)
+			buf_offset = (info->image_read % BUF_SIZE);
+		else
+			buf_offset = BUF_SIZE;
+		memcpy(addr, &buf[buf_offset - res], res);
+		addr = addr + res;
+	}
+
+	while (info->image_read < offset + size) {
+		res = xyzModem_stream_read(buf, BUF_SIZE, &err);
+		if (res <= 0)
+			break;
+
+		memcpy(addr, buf, res);
+		info->image_read += res;
+		addr += res;
+	}
+
+	return size;
+}
+
+int spl_ymodem_load_image(struct spl_image_info *spl_image,
+			  struct spl_boot_device *bootdev)
+{
+	ulong size = 0;
+	int err;
+	int res;
+	int ret;
+	connection_info_t info;
+	char buf[BUF_SIZE];
+	struct image_header *ih = NULL;
+	ulong addr = 0;
+
+	info.mode = xyzModem_ymodem;
+	ret = xyzModem_stream_open(&info, &err);
+	if (ret) {
+		printf("spl: ymodem err - %s\n", xyzModem_error(err));
+		return ret;
+	}
+
+	res = xyzModem_stream_read(buf, BUF_SIZE, &err);
+	if (res <= 0)
+		goto end_stream;
+
+	if (IS_ENABLED(CONFIG_SPL_LOAD_FIT_FULL) &&
+	    image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
+		addr = CONFIG_SYS_LOAD_ADDR;
+		ih = (struct image_header *)addr;
+
+		memcpy((void *)addr, buf, res);
+		size += res;
+		addr += res;
+
+		while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
+			memcpy((void *)addr, buf, res);
+			size += res;
+			addr += res;
+		}
+
+		ret = spl_parse_image_header(spl_image, ih);
+		if (ret)
+			return ret;
+	} else if (IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+	    image_get_magic((struct image_header *)buf) == FDT_MAGIC) {
+		struct spl_load_info load;
+		struct ymodem_fit_info info;
+
+		debug("Found FIT\n");
+		load.dev = NULL;
+		load.priv = (void *)&info;
+		load.filename = NULL;
+		load.bl_len = 1;
+		info.buf = buf;
+		info.image_read = BUF_SIZE;
+		load.read = ymodem_read_fit;
+		ret = spl_load_simple_fit(spl_image, &load, 0, (void *)buf);
+		size = info.image_read;
+
+		while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0)
+			size += res;
+	} else {
+		ih = (struct image_header *)buf;
+		ret = spl_parse_image_header(spl_image, ih);
+		if (ret)
+			goto end_stream;
+#ifdef CONFIG_SPL_GZIP
+		if (ih->ih_comp == IH_COMP_GZIP)
+			addr = CONFIG_SYS_LOAD_ADDR;
+		else
+#endif
+			addr = spl_image->load_addr;
+		memcpy((void *)addr, buf, res);
+		ih = (struct image_header *)addr;
+		size += res;
+		addr += res;
+
+		while ((res = xyzModem_stream_read(buf, BUF_SIZE, &err)) > 0) {
+			memcpy((void *)addr, buf, res);
+			size += res;
+			addr += res;
+		}
+	}
+
+end_stream:
+	xyzModem_stream_close(&err);
+	xyzModem_stream_terminate(false, &getcymodem);
+
+	printf("Loaded %lu bytes\n", size);
+
+#ifdef CONFIG_SPL_GZIP
+	if (!(IS_ENABLED(CONFIG_SPL_LOAD_FIT) &&
+	      image_get_magic((struct image_header *)buf) == FDT_MAGIC) &&
+	    (ih->ih_comp == IH_COMP_GZIP)) {
+		if (gunzip((void *)(spl_image->load_addr + sizeof(*ih)),
+			   CONFIG_SYS_BOOTM_LEN,
+			   (void *)(CONFIG_SYS_LOAD_ADDR + sizeof(*ih)),
+			   &size)) {
+			puts("Uncompressing error\n");
+			return -EIO;
+		}
+	}
+#endif
+
+	return ret;
+}
+SPL_LOAD_IMAGE_METHOD("UART", 0, BOOT_DEVICE_UART, spl_ymodem_load_image);